Timing mechanism in roll-leaf hot stamping machine



Aug. 9, 1966 A. KINGSLEY 3,264,977

TIMING MECHANISM IN ROLL-LEAF HOT STAMPING MACHINE Filed May 14, 1964 2Sheets-Sheet l Era. J.

BY 7 mg,

9, 1966 L. A. KINGSLEY 3,264,977

TIMING MECHANISM IN ROLL-LEAF HOT STAMPING MACHINE Filed May 14, 1964 2Sheets-Sheet 2 INVENTOR. (H V/5 ,4. {fit/654 57 United States Patent3,264,977 TIMING MECHANISM IN ROLL-LEAF HOT STAMPING MACHINE Lewis A.Kingsley, 850 Cahuenga Blvd, Hollywood, Calif. Filed May 14, 1964, Ser.No. 367,301 7 Claims. (Cl. 1011l) This invention relates to hot stampingmachines and more particularly relates to an improved timing mecha nismfor a roll-leaf hot stamping machine.

In a roll-leaf hot stamping machine of the type used for marking wire,tubing tape or the like, at predetermined intervals to mark the samewith a code identification or a similar marking, it is frequentlydesirable to vary the time interval during which the type and foilengage the work. Such adjustability is particularly desirable whenbeginning a series of stamping operations to determine the properinterval for a particular type of material, during a run if otherconditions should change, and when substituting different types ofmaterial.

It is therefore an object of this invention to provide a control forvarying the stamping interval of a roll-leaf hot stamping machine.

It is also an object of this invention to provide such a control whichis adjustable during the operation of the machine.

It is another object of the present invention to provide such a controlwhich is simple and durable and which is operated in conjunction withthe feed mechanism of the machine.

These and other objects and advantages of the present invention willbecome more apparent upon reference to the accompanying description anddrawings in which:

FIGURE 1 is a side elevation of a machine embodying the presentinvention;

FIGURE 2 is a view taken along lines 2-2 of FIG- URE 1;

FIGURE 3 is a cross-sectional view taken along lines 3-3 of FIGURE 2;

FIGURE 4 is an enlarged view of a portion of the machine of FIGURE 1;

FIGURE 5 is a cross-sectional view taken along lines 5-5 of FIGURE 2;

FIGURE 6 illustrates how the stamping interval is adjusted by means ofthe present invention; and

FIGURE 7 shows a modification of the present invention.

The basic machine with which this invention is concerned is described indetail in my prior United States Letters Patent No. 2,961,950, issuedNovember 29,. 1960, the specification of which is incorporated byreference herein. Other details of the machine illustrated in thedrawings of this application are fully described in my prior UnitedStates Letters Patent No. 2,960,024 issued November 15, 1960, and in mynow abandoned patent application Serial No. 215,921, filed August 9,1962, for Spacing Mechanism in Hot Roll-Leaf Stamping Machine. Thespecification of that patent and that patent application are alsoincorporated herein by reference.

Referring now to the drawings, a hot stamping machine is illustratedhaving a material stamping assembly, generally indicated at 10, and amaterial feed assembly, generally indicated at 12, of the type fullydescribed in the aforementioned Patent No. 2,961,950. A stampingactuating assembly, generally indicated at 14, having an air cylinder 16and an air hose 18 is of the type described in aforementioned Patent No.2,960,024.

A feed spacing adjustment assembly, generally indicated at 20, is of thetype described in the aforementioned patent application and includes arocking arm 22 pivoted 3,264,977 Patented August 9, 1966 about anadjustable pin or fulcrum 24. The rocking arm 22 is actuated by a shaft26 having a bifurcated end to which the arm 22 is connected by a pin 28.The shaft 26 reciprocates in a sleeve 30. The mechanism for adjustingthe position of the fulcrum 24, described in my aforementionedapplication, is controlled by a knob 32 on control panel 34. Power foroperating the various mechanisms of the machine is provided by a motor36.

The shaft 26 is reciprocated in the sleeve 30 by means of a crank arm 44which is connected to the shaft 26 by means of a pin 46. The other endof the crank arm 44 is pivotally pinned to a disc or wheel 48 which iseccentrically mounted on a shaft 50.

A plate 52 is mounted on the bed of the machine in the vicinity of thedisc 48 and has mounted thereon a block 54 having a horizontal channel56 formed therein. The channel is covered by a cover plate 58 and has aslider 60 mounted for sliding movement therein. The slider 60 has a slot62 formed therein in which is positioned a spring 64 which cooperateswith a pin 66 mounted on the block 54 to urge the slider 60 toward therear of the channel 56.

A threaded member 68 is threaded into a cooperating passageway in theslider 60 and is journalled in a bushing 70 force fit into an end plate71 mounted on the block 54 and cover plate 58; A collar 72 is fixedlyattached to the protruding end of the threaded member 68 by means of aset screw 74.

The other end of the slider 60 has a plate 76 fixedly mounted thereon.The plate 76 extends beyond the block 54 and has mounted thereon an airvalve assembly 78 by means of the threaded neck 80 of the assembly 78and a pair of nuts 82 and 84. The air valve assembly 78 includes a body86 integral with the neck 80. The body 86 has a valve'chamber 88 formedtherein which is in communication with an inlet passage 90 and an outletpassage 92. These passageways are respectively connected to conduits 94and 96.

A valve body 98 is slidably mounted in the chamber 86 and is adapted tocooperate with a valve seat 100 formed at one end of the chamber tobreak fluid communication between the inlet passage 90 and outletpassage 92. A spring 102 normally biases the valve body 98 intoengagement with the seat 100. The spring 102 is held in position by ascrew 104. An O-ring 106 is provided to maintain the integrity of thevalve chamber 88.

The valve body 98 is providedwith an extension 108 which passes througha passageway in the body 86 and extends into a passageway formed in theneck 80. A sliding member 110 is slidably mounted in this passageway andis threaded onto the extension 108. The sliding member 110 is providedwith an O-ring 112 to prevent escape of air from the valve chamber 88.The end of the sliding member 110 is bifurcated and carries a pin 116 onwhich is rotatably mounted a roller 117.

A flexible cable 118 is connected to the collar 72 by means of anysuitable coupling 120 and extends into the control panel 34. A knob 122on the control panel is operatively connected to the cable 118 in anymanner well known to those skilled in the art so that rotation of theknob 122 is transmitted through the cable 118, coupling 120 and collar72 to the threaded member 68.

By turning the knob 122, the slider 60 can thus be moved in the channel56. This movement is coupled to the air valve assembly 78 by means ofthe plate 76 and thus serves to move the roller 16 closer to or furtherfrom the rotating disc 48. Engagement of the periphery of the disc 48with the roller 116 will, of course, cause the valve body 98 to moveaway from the valve seat 100 and permit the flow of pressurized air fromthe inlet passage 90 to the outlet passage 92. The conduit 96 connectedto the outlet passage 92 can be coupled in any suitable 3 fashion tothe. air hose 18 and thus the movement of the valve body 98 will causethe air cylinder 16 to actuate the material stamping assembly.

FIGURE 6 shows how the movement of the roller 117 together with theeccentric mounting of the disc 48 changes the stamping interval of themachine. As the roller 117 is moved further away from the shaft 50 uponwhich the disc 48 is mounted, the contact time between the disc 48 androller 117 is reduced and consequently the air valve is open for ashorter time period. It can be seen that very accurate control of thestamping interval can. be achieved by turning the knob 122. For coarsercontrol, the air valve assembly 98 can be moved relative to the plate 76and then again fastened into position by nuts 82 and 84. The timinginterval control provided by the knob 122 can be exercised at any timeand does not in any way intrfere with, or require the stopping of, theoperation of the machine.

A modification of the invention is shown in FIGURE 7. In this figure,the contact arm 124 of an electric switch 126 has been substituted forthe roller 116. The electric switch is adjustably mounted on the plate76 in place of the air valve assembly 78, and electrical leads from theswitch connected to a solenoid operated valve (not shown) which servesto interrupt the air supply to the air cylinder 16. Movement of theswitch 126 closer to or further from the eccentrically mounted disc 48varies the stamping interval in the same manner as did moving the roller117 in the embodiment shown in the other figures.

The invention may be embodied in other specific forms not departing fromthe spirit or central characteristics thereof. The present embodimentsare therefore to be considered in all respects as illustrative and notrestrictive, the scope of the invention being indicated by the appendedclaims rather than by the foregoing description, and all changes whichcome within the meaning and range of equivalency of the claims aretherefore intended to be embraced therein.

I claim:

1. In a roll-leaf hot stamping machine of the type having a pressurecylinder actuated stamping mechanism for marking material intermittentlyadvanced through the machine, and means for supplying fluid underpressure to said cylinder for causing the operation thereof, thecombination of a valve coupled in said fluid supplying means to controlthe flow of fluid therethrough, a shaft, means for rotating said shaft,a disc .eccentrically mounted on said shaft, valve actuating meanscoupled to said valve for opening said valve, said valve actuating meansincluding a roller mounted on a shaft coupled to the body of said valvewhereby engagement of said roller by said disc causes said valve to beopened, a block mounted on said machine, a slider slidably mounted onsaid block, remotely controllable meansfor moving said slider relativeto said block, and a plate mounted on said slider, said valve actuatingmeans being mounted on said plate for movement relative to said disc tovary the time interval of engagement between said disc and saidengageable means.

2. The combination of claim 1 wherein said engageable means is anelectric switch operable by engagement of said disc to cause said valveto be opened.

3. In a roll-leaf hot stamping machine of the type having a pressurecylinder actuated stamping mechanism for marking material, means forsupplying fluid under pressure to said cylinder for causing theoperation thereof, and

a mechanism for intermittently advancing said material through saidmachine including a reciprocating mechanism for pivoting a rocking armabout a fulcrum, the combination of a valve coupled in said fluidsupplying means to control the flow of fluid therethrough, a shaft,means for rotating said shaft, a disc eccentrically mounted on saidshaft, a crank arm drivingly coupling said disc with said reciprocatingmechanism, valve actuating means coupled to said valve for opening saidvalve, said valve actuating means including means engageable with saiddisc to cause opening of said valve, a block mounted on the bed of saidmachine, a slider slidably mounted on said block, remotely controllablemeans for moving said slider relative to said block, said remotelycontrollable means including a member having one end threadedlycooperating with said slider to move said slider relative to said blockand the other end extending beyond said block, a collar fixably mountedon said other end, .and cable means coupled to said collar for causingrotation of said member and lateral movement of said slider, a platemounted on said slider, and means mounting said valve actuating means onsaid plate, movement of said slider and said plate causing movement ofsaid engageable means relative to the periphery of said disc to vary thetime interval of engagement between said disc and said engageable means.

4. The combination of claim 3 wherein said slider slides in a channelformed in said block and is provided with a slot, said block is providedwith a pin that extends into said slot, and a spring is provided in saidslot for cooperating with said pin to urge said slider toward saidthreaded member.

5. The combination of claim 4 wherein said engageable means is a rollermounted on a shaft coupled to the body of said valve whereby engagementof said roller by said disc causes said valve to be opened.

6. The combination of claim 4 wherein said engageable means is anelectric switch operable by engagement of said disc to cause said valveto be opened.

7. The combination of claim 5 wherein said valve actuating meansincludes a body portion and a hollow neck portion, said neck portionbeing adjustably mounted on said plate, said body portion including avalve chamber having inlet and outlet passages and a valve seat adjacentsaid passages, said valve body being slidably mounted in said chamberand engageable with said seat for blocking fluid communication betweensaid passages, said coupling shaft extending through said hollow neck,and spring means in said chamber urging said valve body into engagementwith said seat.

References Cited by the Examiner UNITED STATES PATENTS 1,851,555 3/1932Wheeler.

2,228,700 1/1941 Hamner et al. 137-624.17 X 2,944,480 7/1960 Nilsson101-11 2,960,024 11/1960 Kingsley 101-9 X 2,994,264 8/1961 Hauer 101-952,996,000 8/1961 Kingsley 101-11 3,128,692 4/1964 T'al'arico 10l1lROBERT E. PULFREY, Primary Examiner.

NATHANIEL A. HUMPHRIES, WILLIAM Mc- CARTHY, Assistant Examiners.

1. IN A ROLL-LEAF HOT STAMPING MACHINE OF THE TYPE HAVING A PRESSURECYLINDER ACTUATED STAMPING MECHANISM FOR MARKING MATERIAL INTERMITTENTLYADVANCED THROUGH THE MACHINE, AND MEANS FOR SUPPLYING FLUID UNDERPRESSURE TO SAID CYLINDER FOR CAUSING THE OPERATION THEREOF, THECOMBINATION OF A VALVE COUPLED IN SAID FLUID SUPPLYING MEANS TO CONTROLTHE FLOW OF FLUID THERETHROUGH, A SHAFT, MEANS FOR ROTATING SAID SHAFT,A DISC ECCENTRICALLY MOUNTED ON SAID SHAFT, VALVE ACTUATING MEANSCOUPLED TO SAID VALVE FOR OPENING SAID VALVE, SAID VALVE ACTUATING MEANSINCLUDING A ROLLER MOUNTED ON A SHAFT COUPLED TO THE BODY OF SAID VALVEWHEREBY ENGAGEMENT OF SAID ROLLER BY SAID DISC CAUSES SAID VALVE TO BEOPENED, A BLOCK MOUNTED ON SAID MACHINE, A SLIDER SLIDABLY MOUNTED ONSAID BLOCK, REMOTELY CONTROLLABLE MEANS FOR MOVING SAID SLIDER RELATIVETO SAID BLOCK, AND A PLATE MOUNTED ON SAID SLIDER, SAID VALVE ACTUATINGMEANS BEING MOUNTED ON SAID PLATE FOR MOVEMENT RELATIVE TO SAID DISC TOVARY THE TIME INTERVAL OF ENGAGEMENT BETWEEN SAID DISC AND SAIDENGAGEABLE MEANS.